A black-eared opossum (Didelphis marsupialis) is photographed near camp, a species that has now been registered at both study sites. Another camp visitor is a cane toad (Rhinella marina). Native to Madidi and much of South America, this enormous amphibian is a voracious predator and is one of the most problematic introduced species in Australia. Registered fish species also increases including the peculiar chocolate-colored whiptail catfish (Rineloricaria lanceolata).